What 5 factors should we take into account when

Info icon This preview shows pages 4–6. Sign up to view the full content.

What 5 factors should we take into account when dealing with poisonous plants on rangelands? o Class of livestock, condition of animal, season of use, availability of other forage, ecology/succession What are “decreasers”, “increasers”, and “invaders”, in terms of grazing management? o Decreaser : plant that is among the first to disappear under heavy grazing o Increaser : plant that becomes more numerous as decreasers become less numerous o Invader : plant that establishes because more desirable plants are lacking Describe how grazing management can be used to help prevent livestock poisoning on rangelands—the study by Taylor and Ralphs described how to do this for bitterweed and oak on Texas rangelands. o If you mix the types of livestock and the density that they are stocked on the land you can decrease the amount of livestock poisoned What type of climate does the California Annual Grassland and California Chaparral have? Describe its seasonal distribution of precipitation and moisture o Mediterranean: cool, wet winters and warm, dry summers o Most precipitation and moisture is late winter months Jan-march What are the characteristic species for California Annual Grassland? For Chaparral? o California annual grassland: broadleaf and redstem filaree, slender and wild oats, ripgut and soft brome o Chaparral: chamise What did the earliness of invasion by non-native species mean for our understanding of California annual grasslands?
Image of page 4

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

o The invasion was so rapid and early that scientists never had the chance to study these areas before the exotic plant invasion How has our understanding of the distribution of purple needlegrass changed over time? What is our best current theory about it? What types of evidence do we have for the existence of a “California Forbland”? o Historical: Anza Expedition “vast wildflowers”/John Muir “covered with wildflowers” o Ecological: limited by precipitation less than 245mm/appears to be more common now due to burning and grazing/natures of annuals o Experimental: California grasslands are easily divided into smaller units to aid understanding/burning decreases native forbs What is the hierarchy of dominancy between exotic grasses, exotic forbs, and native forbs in California Annual Grassland? o Exotic grasses, exotic forbs, native forbs How was the eastern deciduous forest different prior to European contact than it is now? Is the eastern deciduous forest one homogenous vegetation type? What about the western montane forest—is it homogenous?
Image of page 5
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.
  • Fall '09
  • wester
  • The Land, Introduced species, California annual grassland, Sagebrush Grasslands, big sagebrush

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern